Photographic cartridge and method of making same



July 8, 1924. 1,500,393

J. G. JONES ET AL.

PHOTOGRAPHIC CARTRIDGE AND METHOD OF MAKING SAME Filed May 24, 1922 72625 BYW 2f l WM/fm ATTORNEYS.

Patented July 8, 1924.

UNITED STATES 1,500,393 PATENT OFFICE.

JOHN-G. JONES AND HAY WOOD G. DEWEY, OF ROCHESTER, NEW YORK, ASSIGNOES T' EASTMAN KODAK COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF YORK.

IPHOTOGRAIHIC CARTRIDGE AND METHOD 0F MAKING SAME.

Appiication filed may 24, 1922. serial No. 563,447.

To aZZ lwhom t may concem:

Be it known that we, JOHN G. JONES and HAYWooD G. DEWEY, citizens of the United States of America, residing at Rochester,

in the county of Monroe and State of New York, have invented certain new and useful Improvements in Photographic Cartridges and Methods of Making Same, of which the following is a full, clear, and exact speci# cation.

Our present invention relates to improved photographic roll film cartridges and more particularly to an improved sticker used in such cartridges and to the improved process of assembling such cartridges by the use of such stickers.

Roll film cartridges of a common type in clude long strips of interwound backing paper and lm, the 'latter being secured at one end by a sticker tov the paper,

and the other end being free but having a sticker attached. There have been marketed such lms in which the adhesive of the rst mentioned stickers was waterproof or unaected by water, the use of such stickers rendering possible the rapid assembly of the cartridge without the possible introduction of moisture at this point. It has not been possible, however, to utilize this 80 type of sticker at the free end of the film for the reason that the permanently tacky adhesive will at once adhere to the backing paper if interwound therewith. It has, there.

fore, been customary to use a sticker with a 85 water-soluble adhesive, such as glue, at this free end of the film. The use of such a sticker necessitated the dampening of the end thereof which was to be attached to the film and involved certain disadvantages.

We have perfected ,an improved sticker for use at the free or'unattached end of the film which overcomes these disadvantages in the process of making the cartridge and which further improves the cartridge as a photographic article. It comprises a sticker carrying a Water affected adhesive by whlch it may be attached to the paper when desired, but carrying also a portion coated with a permanently tacky adhesive by which it may be applied to the film without the application of water;'and thus permitting the immediate winding'of all the elements in a d condition.

l'Reference will now be made to the ac- Fig. 3 is a plan of our improved sticker;

Fig. 4 is a fragmentary view showing in section an alternative .form of sticker in position;

Figs. 5 and 6 are sections of other alternative forms of stickers;

Fig. 7 is a fragmentary view showing another form of sticker in position.

In the drawings, 1 indicates a spool on which are interwound a long strip of -protective paper 2 and a strip of photographic film 3 attached to the paper at its end 4l, which is outermost when sold, by a sticker 5, the adhesive of which is preferably permanently tacky and unaected by moisture. The inner end 6 of the film carries a sticker 7 attached thereto, but unattached to the protective strip 2.

Our preferred form of sticker 7 comprises a rectangular strip, as shown in Fig. 3, along one border of which is coated a band 8 of permanently tacky adhesive material unaffected by water, and along the opposite border of which is coated a band 9 of glue or other water-soluble adhesive, leaving an uncoated intermediate portion 10.

In the process of making a cartridge a spool l is placed in suitable winding means, such as spindles 11, 12, which may be adaptl ed for rotation by any desirable mechanism, either hand actuated or automatic, a machine for operating such spindles being disclosed in the pending application Serial No. 516,229, filed Nov. 18, 1921, of Jones, one of the present inventors. The end of a strip of backing paper 2 is attached to the spool which is then turned in the direction indicated by the arrow until a length sufficient for a lead strip is wound thereon. Preferably the paper is drawn from a suitable supply, not shown, over a" guiding table 13.

The end 6 of a strip of iilm 3 is now placed 0n this table and a stickerv 7 placed thereon with adhesive band 8 in contact with the film. The rotation of the spool is then continued, interwinding the assembled film and sticker with the backing paper.

Certain -advantages may here be noted in the process that are inherent in the use of the tacky adhesive. When aI water-soluble adhesive is used, it is necessary to moisten the adhesive sufficiently to attach the sticker firmly to the film, the sticker must then be pressed into firm contact with the film and then preferably permitted to dry. If too much water is used, either' too great an amount of moisture will be carried into the cartridge or an undesirable delay will be necessary. If too little water is used the sticker will not adhere firmly. Moreover, while the stickers may be positioned by automatic machinery, they are in practice placed by hand; and it is customary for the operator to press the sticker into adhesive contact with the fingers. If this is not uniformly done over the surface, some parts will not be stuck, especially if too little water has 'been used. As the adhesive dries rapidly, its adherent qualities decrease. All of these difficulties are overcome by the permanently tacky adhesive; no water is carried into the cartridge; no delay is desirable; and when the stickery is properly positioned on the film and carried into the roll, it will be pressed into firm adhesive contact by the pressure of the tight winding.

It is obvious that the cartridge as a photographic article is improved, since the possibility of the presence of undesirable moisture is greatly reduced.

It is apparent that numerous modifications may be made in the form of the sticker and we have chosen certain of the more desirable ones for purposes of illustration.

The two adhesive bands need not be separated by an intermediate uncoated portion and forms illustrativeof this are shown in Figs. 5 and 6. In Fig. 5 the two coatings, 14 and l5, of waterproof and water-soluble adhesives respectively are extended from the borders of the supporting strip- 16 to,

meet at an intermediate point 17, leaving no uncoated portion. In Fig. 6, a support '18, preferably of paper, is uniformly coated with one type of adhesive 19, and upon this is adhesively secured a smaller strip 20, preferably of paper coated with the other type of adhesive 21, this forming a sticker having portions of each type. This type offers certain manufacturing advantages.

It is not necessary that the two adhesive coatings be on the same side or surface of the sticker strip. In Fig. 4 is shown a strip 22 having on one surface a border 23 of permanently tacky adhesive by which it is attached to the end 6 of the film 3, and on the other surface and near the opposite edge a border 25 of dry water-soluble adhesive, which is not attached to the protective paper 2 but which may be attached thereto when desired. In Fig. 7 is shown a strip 26, the opposite surfaces of which are entirely coated with adhesive, one coating, 27, being of the permanently adhesive type by which the strip is secured to the end 6 of film 3, and the other coating, 28, being of the water-soluble type and not attached to the protective strip 2.

The adhesive which we described as waterproof or permanently tacky, is of a well known type such as is used for adhesive tapes of various kinds. A typical composition includes rubber and coalv tar pitch with any suitable softener such as benzol, gasoline or chloroform. We do not limit ourselves to any particular compositionsince any adhesive that is so slow drying as to maintain its tackiness over a reasonable time, and the adhesive properties of which are unaffected by water, is contemplated as within the scope of our invention. Similarly when we refer to watersoluble adhesive, we intend to include any glue or paste4 which usually dries quickly and which becomes quickly adhesive in the presence of moisture.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:

l. A photographic roll film cartridge comprising' interwound strips ofy film and of protective material and a sticker, one p0rtion of which is coated with an adhesive material unaffected by moisture and attached thereby to one end of the film, and another portion of which is free and unattached and coated with an adhesive material capable of being affected by water.

2. A photographic roll film cartridge comprising interwound strips of film and of protective material and a sticker, one border of whichvis coated with a waterproof adhesive and attached thereby to one end of the film land another border of which is free and'una'ttached and coated with an adhesive material capable of being aected by Water.

3. A photographic roll film cartridge comprising strips of film and of protective material interwound in a coil, the strip of film at its outer end being attached to the protective material and at its inner end being unattached thereto, and a sticker having a portion thereof coated with adhesive material unaffected by water, whereby it is attached to the inner end of the strip of film and having a free and unattached portion coated with an adhesive material capable of being affected by water.

4. The method of making a'photographic film cartridge that comprises attaching a sticker, coated in part with adhesive material capable of being affected by water, to the end of a strip of film by means of another part coated with adhesive material unaffected by moisture, and at once interwinding such film andsticker with a band of protective material.

1,5oo,sos g 5. The method of making a photographic one end of a strip of film and at once tightfilm cartridge that comprises taking a ly interwinding such lm and sticker with sticker coated in part with adhesiveY material a band of protective material. 10 capable of being ai'ected by water and in Signed at Rochester, New York, this 17th 5 part with waterproof adhesive material, layday of April, 1922.

ing such a sticker in a dry state with the JOHN G. JONES. second named part in adhesive contact with HAYWOOD G. DEWEY. 

